Hello all, I am looking to purchase an AAC 762 SD suppressor. I have an FN SPRA1 I want to put it on. It shoots .5 moa w/ match. I don't want to mess it up... I waited for a good factory rifle for a while, saved all my lunch money etc. Now I am after a can. Do any of you have experience with a smith who does heavy barrel threading? I am willing to send it to the furthermost 48 (53 if your Obama). I will have several months to do this while I wait for my Form 4. Thank you for your info.